Voriconazole (By mouth)

Introduction

Voriconazole (vor-i-KON-a-zole)

Treats fungal infections.

Brand Name(s)

Vfend

There may be other brand names for this medicine.

When This Medicine Should Not Be Used

You should not use this medicine if you have had an allergic reaction to voriconazole. Do not use this medicine if you are pregnant. Do not use this medicine together with any of the following medicines: astemizole (Hismanal®), barbiturates (such as mephobarbital, phenobarbital, or Luminal®), carbamazepine (Tegretol®), cisapride (Propulsid®), ergot medicines (such as dihydroergotamine, ergotamine, Cafergot®, Ergomar®, or Wigraine®), fluconazole (Diflucan®), pimozide (Orap®), quinidine (Quinaglute®), rifabutin (Mycobutin®), rifampin (Rifadin®, Rimactane®), ritonavir (Norvir®), sirolimus (Rapamune®), St. John's wort, or terfenadine (Seldane®).

How to Use This Medicine

Suspension, Tablet

Your doctor will tell you how much of this medicine to use and how often. Your dose may need to be changed several times in order to find out what works best for you. Do not use more medicine or use it more often than your doctor tells you to.

Shake the oral liquid well just before each use. Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

It is best to take this medicine at least 1 hour before or 1 hour after a meal.

Keep using this medicine for the full treatment time, even if you feel better after the first few doses. Your infection may not clear up if you stop using the medicine too soon.

This medicine comes with patient instructions. Read and follow these instructions carefully. Ask your doctor or pharmacist if you have any questions.

If a dose is missed:

If you miss a dose or forget to use your medicine, use it as soon as you can. If it is almost time for your next dose, wait until then to use the medicine and skip the missed dose. Do not use extra medicine to make up for a missed dose.

How to Store and Dispose of This Medicine

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Do not refrigerate or freeze the mixed suspension. The mixed suspension should be kept at room temperature and used within 14 days. Throw away any unused medicine for more than 14 days. Ask your doctor if you need a new prescription.

Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.

Keep all medicine away from children and never share your medicine with anyone.

Drugs and Foods to Avoid

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

Warnings While Using This Medicine

Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using the medicine, tell your doctor right away.

Make sure your doctor knows if you are breastfeeding, or if you have a kidney disease, liver disease, heart disease, heart rhythm problems, pancreas problems, or a mineral imbalance such as low levels of potassium, magnesium, or calcium in your blood. Tell your doctor if you had a recent cancer treatment or stem cell transplant.

The tablet form of this medicine contains lactose (milk sugar). The oral liquid contains sucrose (table sugar). Make sure your doctor knows if you or your child have a condition that makes it hard for you to digest sugars or dairy products.

This medicine may cause vision problems. Avoid driving (especially at night), using machines, or doing anything else that could be dangerous if you cannot see well. Call your doctor if you or your child have any vision changes or if bright lights bother your eyes.

Check with your doctor right away if you have pain or tenderness in the upper stomach; pale stools; dark urine; loss of appetite; nausea; unusual tiredness or weakness; or yellow eyes or skin. These could be symptoms of a serious liver problem.

Serious skin reactions can occur during treatment with this medicine. Stop using this medicine and check with your doctor right away if you have any of the following symptoms while you are using this medicine: blistering, peeling, loosening of the skin; chills; cough; diarrhea; fever; itching; joint or muscle pain; red skin lesions; sore throat; sores, ulcers, or white spots in the mouth or on the lips; or unusual tiredness or weakness.

Your doctor will need to check your blood at regular visits while you are using this medicine. Be sure to keep all appointments.

This medicine may make your skin more sensitive to sunlight. Use a sunscreen when you are outdoors. Avoid sunlamps and tanning beds.

If your symptoms do not improve or if they get worse, call your doctor.

If you notice other side effects that you think are caused by this medicine, tell your doctor

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088

Version Info

Last Reviewed on 06/12/2013

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